diff --git a/src/ontology/imports/oba_import.obo b/src/ontology/imports/oba_import.obo
index f7dea65e8c..49a2f9c112 100644
--- a/src/ontology/imports/oba_import.obo
+++ b/src/ontology/imports/oba_import.obo
@@ -1,5 +1,5 @@
 format-version: 1.2
-data-version: go/releases/2017-04-25/imports/oba_import.owl
+data-version: go/releases/2019-07-03/imports/oba_import.owl
 ontology: go/imports/oba_import
 
 [Term]
@@ -20,8 +20,6 @@ name: Malpighian tubule size
 def: "The size of a Malpighian tubule." []
 synonym: "size of Malpighian tubule" EXACT []
 is_a: OBA:0000172 ! tube size
-is_a: OBA:VT0010454 ! organism trait
-is_a: OBA:VT1000777 ! urinary system trait
 
 [Term]
 id: OBA:0000009
@@ -50,9 +48,6 @@ name: angiotensin levels in blood
 def: "The amount of a angiotensin II when measured in blood." []
 synonym: "blood angiotensin II amount" EXACT []
 is_a: OBA:0000079 ! hormone levels
-is_a: OBA:VT0010248 ! hemolymphoid system trait
-is_a: OBA:VT0010454 ! organism trait
-is_a: OBA:VT1000784 ! circulatory system trait
 
 [Term]
 id: OBA:0000018
@@ -88,8 +83,8 @@ is_a: OBA:VT0001614 ! blood vessel morphology trait
 id: OBA:0000036
 name: body fluid levels
 def: "The volume when measured in multicellular organism." []
-is_a: OBA:0000001 ! biological attribute
-is_a: OBA:VT0010454 ! organism trait
+synonym: "multicellular organism volume" EXACT []
+is_a: OBA:VT0100005 ! body size trait
 
 [Term]
 id: OBA:0000037
@@ -115,8 +110,6 @@ def: "The membrane potential of a cardiac muscle cell." []
 synonym: "membrane potential of cardiac muscle cell" EXACT []
 is_a: OBA:0000099 ! membrane potential
 is_a: OBA:1000076 ! attribute of cell
-is_a: OBA:VT0010454 ! organism trait
-is_a: OBA:VT1000784 ! circulatory system trait
 
 [Term]
 id: OBA:0000048
@@ -130,7 +123,7 @@ id: OBA:0000050
 name: cell pH
 def: "The pH of a cell." []
 synonym: "pH of cell" EXACT []
-is_a: OBA:0000058 ! cellular pH
+is_a: OBA:0000121 ! pH
 is_a: OBA:1000076 ! attribute of cell
 
 [Term]
@@ -174,7 +167,9 @@ is_a: OBA:0100001 ! cellular component attribute
 id: OBA:0000058
 name: cellular pH
 def: "The acidity when measured in cell." []
+synonym: "cell acidity" EXACT []
 is_a: OBA:0000121 ! pH
+is_a: OBA:1000076 ! attribute of cell
 
 [Term]
 id: OBA:0000061
@@ -213,7 +208,6 @@ def: "The microvillus length of a follicle cell." []
 synonym: "microvillus length of follicle cell" EXACT []
 is_a: OBA:0000055 ! cell size
 is_a: OBA:0000102 ! microvillus length
-is_a: OBA:VT0010454 ! organism trait
 
 [Term]
 id: OBA:0000074
@@ -255,13 +249,14 @@ name: lung blood pressure
 def: "The pressure of a blood when measured in lung." []
 synonym: "lung blood pressure" EXACT []
 is_a: OBA:VT0000183 ! blood pressure trait
-is_a: OBA:VT0005388 ! respiratory system trait
 
 [Term]
 id: OBA:0000091
 name: lysosomal lumen pH
 def: "The acidity when measured in lysosomal lumen." []
+synonym: "lysosomal lumen acidity" EXACT []
 is_a: OBA:0000050 ! cell pH
+is_a: OBA:0000058 ! cellular pH
 
 [Term]
 id: OBA:0000092
@@ -370,8 +365,6 @@ def: "The synaptic plasticity of a neuron." []
 synonym: "synaptic plasticity of neuron" EXACT []
 is_a: OBA:0000141 ! synaptic plasticity
 is_a: OBA:1000076 ! attribute of cell
-is_a: OBA:VT0010454 ! organism trait
-is_a: OBA:VT1000781 ! nervous/sensory system trait
 
 [Term]
 id: OBA:0000116
@@ -561,7 +554,6 @@ name: urinary volume
 def: "The volume of a urine." []
 synonym: "volume of urine" EXACT []
 is_a: OBA:0000036 ! body fluid levels
-is_a: OBA:0100003 ! anatomical entity attribute
 is_a: OBA:VT0000056 ! urine trait
 
 [Term]
@@ -751,8 +743,6 @@ name: lens of camera-type eye quality
 def: "The quality of a lens of camera-type eye." []
 synonym: "quality of lens of camera-type eye" EXACT []
 is_a: OBA:0100003 ! anatomical entity attribute
-is_a: OBA:VT0010454 ! organism trait
-is_a: OBA:VT0015074 ! organ system trait
 
 [Term]
 id: OBA:1001065
@@ -765,6 +755,8 @@ is_a: OBA:1000076 ! attribute of cell
 id: OBA:VT0000056
 name: urine trait
 def: "The quality when measured in urine." []
+synonym: "urine quality" EXACT []
+is_a: OBA:0100003 ! anatomical entity attribute
 
 [Term]
 id: OBA:VT0000183
@@ -772,9 +764,6 @@ name: blood pressure trait
 def: "The pressure of a blood." []
 synonym: "pressure of blood" EXACT []
 is_a: OBA:0100003 ! anatomical entity attribute
-is_a: OBA:VT0010248 ! hemolymphoid system trait
-is_a: OBA:VT0010454 ! organism trait
-is_a: OBA:VT1000784 ! circulatory system trait
 
 [Term]
 id: OBA:VT0000832
@@ -782,8 +771,6 @@ name: thalamus morphology trait
 def: "The morphology of a dorsal plus ventral thalamus." []
 synonym: "morphology of dorsal plus ventral thalamus" EXACT []
 is_a: OBA:0100003 ! anatomical entity attribute
-is_a: OBA:VT0010454 ! organism trait
-is_a: OBA:VT1000781 ! nervous/sensory system trait
 
 [Term]
 id: OBA:VT0001614
@@ -791,8 +778,6 @@ name: blood vessel morphology trait
 def: "The morphology of a blood vessel." []
 synonym: "morphology of blood vessel" EXACT []
 is_a: OBA:0100003 ! anatomical entity attribute
-is_a: OBA:VT0010454 ! organism trait
-is_a: OBA:VT1000784 ! circulatory system trait
 
 [Term]
 id: OBA:VT0002121
@@ -807,8 +792,6 @@ name: kidney morphology trait
 def: "The morphology of a kidney." []
 synonym: "morphology of kidney" EXACT []
 is_a: OBA:0100003 ! anatomical entity attribute
-is_a: OBA:VT0010454 ! organism trait
-is_a: OBA:VT1000777 ! urinary system trait
 
 [Term]
 id: OBA:VT0002706
@@ -824,14 +807,6 @@ name: respiratory conducting tube morphology trait
 def: "The morphology of a respiratory tube." []
 synonym: "morphology of respiratory tube" EXACT []
 is_a: OBA:0100003 ! anatomical entity attribute
-is_a: OBA:VT0005388 ! respiratory system trait
-is_a: OBA:VT0010454 ! organism trait
-
-[Term]
-id: OBA:VT0005388
-name: respiratory system trait
-def: "The quality when measured in respiratory system." []
-is_a: OBA:VT0015074 ! organ system trait
 
 [Term]
 id: OBA:VT0005404
@@ -840,16 +815,12 @@ def: "The morphology of a axon." []
 synonym: "morphology of axon" EXACT []
 is_a: OBA:VT0015108 ! neurite morphology trait
 
-[Term]
-id: OBA:VT0010248
-name: hemolymphoid system trait
-def: "The quality when measured in hemolymphoid system." []
-is_a: OBA:VT0015074 ! organ system trait
-
 [Term]
 id: OBA:VT0010454
 name: organism trait
 def: "The quality when measured in multicellular organism." []
+synonym: "multicellular organism quality" EXACT []
+is_a: OBA:0100003 ! anatomical entity attribute
 
 [Term]
 id: OBA:VT0015071
@@ -858,11 +829,6 @@ def: "The morphology of a appendage." []
 synonym: "morphology of appendage" EXACT []
 is_a: OBA:1000099 ! appendage trait
 
-[Term]
-id: OBA:VT0015074
-name: organ system trait
-def: "The quality when measured in anatomical system." []
-
 [Term]
 id: OBA:VT0015108
 name: neurite morphology trait
@@ -876,6 +842,13 @@ name: organism subdivision trait
 def: "The quality of a organism subdivision." []
 synonym: "quality of organism subdivision" EXACT []
 is_a: OBA:0100003 ! anatomical entity attribute
+
+[Term]
+id: OBA:VT0100005
+name: body size trait
+def: "The size of a multicellular organism." []
+synonym: "size of multicellular organism" EXACT []
+is_a: OBA:0000015 ! anatomical structure size
 is_a: OBA:VT0010454 ! organism trait
 
 [Term]
@@ -885,24 +858,6 @@ def: "The quality of a growth." []
 synonym: "quality of growth" EXACT []
 is_a: OBA:0100002 ! biological process attribute
 
-[Term]
-id: OBA:VT1000777
-name: urinary system trait
-def: "The quality when measured in renal system." []
-is_a: OBA:VT0015074 ! organ system trait
-
-[Term]
-id: OBA:VT1000781
-name: nervous/sensory system trait
-def: "The quality when measured in nervous system." []
-is_a: OBA:VT0015074 ! organ system trait
-
-[Term]
-id: OBA:VT1000784
-name: circulatory system trait
-def: "The quality when measured in circulatory system." []
-is_a: OBA:VT0015074 ! organ system trait
-
 [Term]
 id: OBA:VT2000000
 name: arterial blood pressure trait
diff --git a/src/ontology/imports/oba_import.owl b/src/ontology/imports/oba_import.owl
index 7d9e57d798..fc47770411 100644
--- a/src/ontology/imports/oba_import.owl
+++ b/src/ontology/imports/oba_import.owl
@@ -1,15 +1,15 @@
 <?xml version="1.0"?>
 <rdf:RDF xmlns="http://purl.obolibrary.org/obo/go/imports/oba_import.owl#"
      xml:base="http://purl.obolibrary.org/obo/go/imports/oba_import.owl"
-     xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+     xmlns:obo="http://purl.obolibrary.org/obo/"
      xmlns:owl="http://www.w3.org/2002/07/owl#"
-     xmlns:oboInOwl="http://www.geneontology.org/formats/oboInOwl#"
+     xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
      xmlns:xml="http://www.w3.org/XML/1998/namespace"
      xmlns:xsd="http://www.w3.org/2001/XMLSchema#"
      xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"
-     xmlns:obo="http://purl.obolibrary.org/obo/">
+     xmlns:oboInOwl="http://www.geneontology.org/formats/oboInOwl#">
     <owl:Ontology rdf:about="http://purl.obolibrary.org/obo/go/imports/oba_import.owl">
-        <owl:versionIRI rdf:resource="http://purl.obolibrary.org/obo/go/releases/2017-04-25/imports/oba_import.owl"/>
+        <owl:versionIRI rdf:resource="http://purl.obolibrary.org/obo/go/releases/2019-07-03/imports/oba_import.owl"/>
     </owl:Ontology>
     
 
@@ -27,25 +27,107 @@
 
     <!-- http://purl.obolibrary.org/obo/IAO_0000115 -->
 
-    <owl:AnnotationProperty rdf:about="http://purl.obolibrary.org/obo/IAO_0000115"/>
+    <owl:AnnotationProperty rdf:about="http://purl.obolibrary.org/obo/IAO_0000115">
+        <rdfs:label rdf:datatype="http://www.w3.org/2001/XMLSchema#string">definition</rdfs:label>
+    </owl:AnnotationProperty>
+    
+
+
+    <!-- http://www.geneontology.org/formats/oboInOwl#created_by -->
+
+    <owl:AnnotationProperty rdf:about="http://www.geneontology.org/formats/oboInOwl#created_by"/>
+    
+
+
+    <!-- http://www.geneontology.org/formats/oboInOwl#creation_date -->
+
+    <owl:AnnotationProperty rdf:about="http://www.geneontology.org/formats/oboInOwl#creation_date"/>
+    
+
+
+    <!-- http://www.geneontology.org/formats/oboInOwl#default-namespace -->
+
+    <owl:AnnotationProperty rdf:about="http://www.geneontology.org/formats/oboInOwl#default-namespace"/>
     
 
 
     <!-- http://www.geneontology.org/formats/oboInOwl#hasBroadSynonym -->
 
-    <owl:AnnotationProperty rdf:about="http://www.geneontology.org/formats/oboInOwl#hasBroadSynonym"/>
+    <owl:AnnotationProperty rdf:about="http://www.geneontology.org/formats/oboInOwl#hasBroadSynonym">
+        <rdfs:label rdf:datatype="http://www.w3.org/2001/XMLSchema#string">has_broad_synonym</rdfs:label>
+    </owl:AnnotationProperty>
+    
+
+
+    <!-- http://www.geneontology.org/formats/oboInOwl#hasDbXref -->
+
+    <owl:AnnotationProperty rdf:about="http://www.geneontology.org/formats/oboInOwl#hasDbXref">
+        <rdfs:label rdf:datatype="http://www.w3.org/2001/XMLSchema#string">database_cross_reference</rdfs:label>
+    </owl:AnnotationProperty>
     
 
 
     <!-- http://www.geneontology.org/formats/oboInOwl#hasExactSynonym -->
 
-    <owl:AnnotationProperty rdf:about="http://www.geneontology.org/formats/oboInOwl#hasExactSynonym"/>
+    <owl:AnnotationProperty rdf:about="http://www.geneontology.org/formats/oboInOwl#hasExactSynonym">
+        <rdfs:label rdf:datatype="http://www.w3.org/2001/XMLSchema#string">has_exact_synonym</rdfs:label>
+    </owl:AnnotationProperty>
+    
+
+
+    <!-- http://www.geneontology.org/formats/oboInOwl#hasOBOFormatVersion -->
+
+    <owl:AnnotationProperty rdf:about="http://www.geneontology.org/formats/oboInOwl#hasOBOFormatVersion">
+        <rdfs:label rdf:datatype="http://www.w3.org/2001/XMLSchema#string">has_obo_format_version</rdfs:label>
+    </owl:AnnotationProperty>
+    
+
+
+    <!-- http://www.geneontology.org/formats/oboInOwl#hasOBONamespace -->
+
+    <owl:AnnotationProperty rdf:about="http://www.geneontology.org/formats/oboInOwl#hasOBONamespace">
+        <rdfs:label rdf:datatype="http://www.w3.org/2001/XMLSchema#string">has_obo_namespace</rdfs:label>
+    </owl:AnnotationProperty>
     
 
 
     <!-- http://www.geneontology.org/formats/oboInOwl#hasRelatedSynonym -->
 
-    <owl:AnnotationProperty rdf:about="http://www.geneontology.org/formats/oboInOwl#hasRelatedSynonym"/>
+    <owl:AnnotationProperty rdf:about="http://www.geneontology.org/formats/oboInOwl#hasRelatedSynonym">
+        <rdfs:label rdf:datatype="http://www.w3.org/2001/XMLSchema#string">has_related_synonym</rdfs:label>
+    </owl:AnnotationProperty>
+    
+
+
+    <!-- http://www.geneontology.org/formats/oboInOwl#id -->
+
+    <owl:AnnotationProperty rdf:about="http://www.geneontology.org/formats/oboInOwl#id"/>
+    
+
+
+    <!-- http://www.geneontology.org/formats/oboInOwl#is_metadata_tag -->
+
+    <owl:AnnotationProperty rdf:about="http://www.geneontology.org/formats/oboInOwl#is_metadata_tag"/>
+    
+
+
+    <!-- http://www.geneontology.org/formats/oboInOwl#shorthand -->
+
+    <owl:AnnotationProperty rdf:about="http://www.geneontology.org/formats/oboInOwl#shorthand">
+        <rdfs:label rdf:datatype="http://www.w3.org/2001/XMLSchema#string">shorthand</rdfs:label>
+    </owl:AnnotationProperty>
+    
+
+
+    <!-- http://www.w3.org/2000/01/rdf-schema#comment -->
+
+    <owl:AnnotationProperty rdf:about="http://www.w3.org/2000/01/rdf-schema#comment"/>
+    
+
+
+    <!-- http://www.w3.org/2000/01/rdf-schema#label -->
+
+    <owl:AnnotationProperty rdf:about="http://www.w3.org/2000/01/rdf-schema#label"/>
     
 
 
@@ -84,8 +166,6 @@
 
     <owl:Class rdf:about="http://purl.obolibrary.org/obo/OBA_0000007">
         <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_0000172"/>
-        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_VT0010454"/>
-        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_VT1000777"/>
         <obo:IAO_0000115 rdf:datatype="http://www.w3.org/2001/XMLSchema#string">The size of a Malpighian tubule.</obo:IAO_0000115>
         <oboInOwl:hasExactSynonym rdf:datatype="http://www.w3.org/2001/XMLSchema#string">size of Malpighian tubule</oboInOwl:hasExactSynonym>
         <rdfs:label rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Malpighian tubule size</rdfs:label>
@@ -130,9 +210,6 @@
 
     <owl:Class rdf:about="http://purl.obolibrary.org/obo/OBA_0000016">
         <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_0000079"/>
-        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_VT0010248"/>
-        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_VT0010454"/>
-        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_VT1000784"/>
         <obo:IAO_0000115 rdf:datatype="http://www.w3.org/2001/XMLSchema#string">The amount of a angiotensin II when measured in blood.</obo:IAO_0000115>
         <oboInOwl:hasExactSynonym rdf:datatype="http://www.w3.org/2001/XMLSchema#string">blood angiotensin II amount</oboInOwl:hasExactSynonym>
         <rdfs:label rdf:datatype="http://www.w3.org/2001/XMLSchema#string">angiotensin levels in blood</rdfs:label>
@@ -189,9 +266,9 @@
     <!-- http://purl.obolibrary.org/obo/OBA_0000036 -->
 
     <owl:Class rdf:about="http://purl.obolibrary.org/obo/OBA_0000036">
-        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_0000001"/>
-        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_VT0010454"/>
+        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_VT0100005"/>
         <obo:IAO_0000115 rdf:datatype="http://www.w3.org/2001/XMLSchema#string">The volume when measured in multicellular organism.</obo:IAO_0000115>
+        <oboInOwl:hasExactSynonym rdf:datatype="http://www.w3.org/2001/XMLSchema#string">multicellular organism volume</oboInOwl:hasExactSynonym>
         <rdfs:label rdf:datatype="http://www.w3.org/2001/XMLSchema#string">body fluid levels</rdfs:label>
     </owl:Class>
     
@@ -231,8 +308,6 @@
     <owl:Class rdf:about="http://purl.obolibrary.org/obo/OBA_0000046">
         <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_0000099"/>
         <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_1000076"/>
-        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_VT0010454"/>
-        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_VT1000784"/>
         <obo:IAO_0000115 rdf:datatype="http://www.w3.org/2001/XMLSchema#string">The membrane potential of a cardiac muscle cell.</obo:IAO_0000115>
         <oboInOwl:hasExactSynonym rdf:datatype="http://www.w3.org/2001/XMLSchema#string">membrane potential of cardiac muscle cell</oboInOwl:hasExactSynonym>
         <rdfs:label rdf:datatype="http://www.w3.org/2001/XMLSchema#string">cardiac muscle cell membrane potential</rdfs:label>
@@ -254,7 +329,7 @@
     <!-- http://purl.obolibrary.org/obo/OBA_0000050 -->
 
     <owl:Class rdf:about="http://purl.obolibrary.org/obo/OBA_0000050">
-        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_0000058"/>
+        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_0000121"/>
         <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_1000076"/>
         <obo:IAO_0000115 rdf:datatype="http://www.w3.org/2001/XMLSchema#string">The pH of a cell.</obo:IAO_0000115>
         <oboInOwl:hasExactSynonym rdf:datatype="http://www.w3.org/2001/XMLSchema#string">pH of cell</oboInOwl:hasExactSynonym>
@@ -324,7 +399,9 @@
 
     <owl:Class rdf:about="http://purl.obolibrary.org/obo/OBA_0000058">
         <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_0000121"/>
+        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_1000076"/>
         <obo:IAO_0000115 rdf:datatype="http://www.w3.org/2001/XMLSchema#string">The acidity when measured in cell.</obo:IAO_0000115>
+        <oboInOwl:hasExactSynonym rdf:datatype="http://www.w3.org/2001/XMLSchema#string">cell acidity</oboInOwl:hasExactSynonym>
         <rdfs:label rdf:datatype="http://www.w3.org/2001/XMLSchema#string">cellular pH</rdfs:label>
     </owl:Class>
     
@@ -381,7 +458,6 @@
     <owl:Class rdf:about="http://purl.obolibrary.org/obo/OBA_0000072">
         <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_0000055"/>
         <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_0000102"/>
-        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_VT0010454"/>
         <obo:IAO_0000115 rdf:datatype="http://www.w3.org/2001/XMLSchema#string">The microvillus length of a follicle cell.</obo:IAO_0000115>
         <oboInOwl:hasExactSynonym rdf:datatype="http://www.w3.org/2001/XMLSchema#string">microvillus length of follicle cell</oboInOwl:hasExactSynonym>
         <rdfs:label rdf:datatype="http://www.w3.org/2001/XMLSchema#string">follicle cell microvillus length</rdfs:label>
@@ -447,7 +523,6 @@
 
     <owl:Class rdf:about="http://purl.obolibrary.org/obo/OBA_0000090">
         <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_VT0000183"/>
-        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_VT0005388"/>
         <obo:IAO_0000115 rdf:datatype="http://www.w3.org/2001/XMLSchema#string">The pressure of a blood when measured in lung.</obo:IAO_0000115>
         <oboInOwl:hasExactSynonym rdf:datatype="http://www.w3.org/2001/XMLSchema#string">lung blood pressure</oboInOwl:hasExactSynonym>
         <rdfs:label rdf:datatype="http://www.w3.org/2001/XMLSchema#string">lung blood pressure</rdfs:label>
@@ -459,7 +534,9 @@
 
     <owl:Class rdf:about="http://purl.obolibrary.org/obo/OBA_0000091">
         <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_0000050"/>
+        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_0000058"/>
         <obo:IAO_0000115 rdf:datatype="http://www.w3.org/2001/XMLSchema#string">The acidity when measured in lysosomal lumen.</obo:IAO_0000115>
+        <oboInOwl:hasExactSynonym rdf:datatype="http://www.w3.org/2001/XMLSchema#string">lysosomal lumen acidity</oboInOwl:hasExactSynonym>
         <rdfs:label rdf:datatype="http://www.w3.org/2001/XMLSchema#string">lysosomal lumen pH</rdfs:label>
     </owl:Class>
     
@@ -626,8 +703,6 @@
     <owl:Class rdf:about="http://purl.obolibrary.org/obo/OBA_0000114">
         <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_0000141"/>
         <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_1000076"/>
-        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_VT0010454"/>
-        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_VT1000781"/>
         <obo:IAO_0000115 rdf:datatype="http://www.w3.org/2001/XMLSchema#string">The synaptic plasticity of a neuron.</obo:IAO_0000115>
         <oboInOwl:hasExactSynonym rdf:datatype="http://www.w3.org/2001/XMLSchema#string">synaptic plasticity of neuron</oboInOwl:hasExactSynonym>
         <rdfs:label rdf:datatype="http://www.w3.org/2001/XMLSchema#string">neuronal synaptic plasticity</rdfs:label>
@@ -925,7 +1000,6 @@
 
     <owl:Class rdf:about="http://purl.obolibrary.org/obo/OBA_0000173">
         <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_0000036"/>
-        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_0100003"/>
         <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_VT0000056"/>
         <obo:IAO_0000115 rdf:datatype="http://www.w3.org/2001/XMLSchema#string">The volume of a urine.</obo:IAO_0000115>
         <oboInOwl:hasExactSynonym rdf:datatype="http://www.w3.org/2001/XMLSchema#string">volume of urine</oboInOwl:hasExactSynonym>
@@ -1215,8 +1289,6 @@
 
     <owl:Class rdf:about="http://purl.obolibrary.org/obo/OBA_1000227">
         <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_0100003"/>
-        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_VT0010454"/>
-        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_VT0015074"/>
         <obo:IAO_0000115 rdf:datatype="http://www.w3.org/2001/XMLSchema#string">The quality of a lens of camera-type eye.</obo:IAO_0000115>
         <oboInOwl:hasExactSynonym rdf:datatype="http://www.w3.org/2001/XMLSchema#string">quality of lens of camera-type eye</oboInOwl:hasExactSynonym>
         <rdfs:label rdf:datatype="http://www.w3.org/2001/XMLSchema#string">lens of camera-type eye quality</rdfs:label>
@@ -1238,7 +1310,9 @@
     <!-- http://purl.obolibrary.org/obo/OBA_VT0000056 -->
 
     <owl:Class rdf:about="http://purl.obolibrary.org/obo/OBA_VT0000056">
+        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_0100003"/>
         <obo:IAO_0000115 rdf:datatype="http://www.w3.org/2001/XMLSchema#string">The quality when measured in urine.</obo:IAO_0000115>
+        <oboInOwl:hasExactSynonym rdf:datatype="http://www.w3.org/2001/XMLSchema#string">urine quality</oboInOwl:hasExactSynonym>
         <rdfs:label rdf:datatype="http://www.w3.org/2001/XMLSchema#string">urine trait</rdfs:label>
     </owl:Class>
     
@@ -1248,9 +1322,6 @@
 
     <owl:Class rdf:about="http://purl.obolibrary.org/obo/OBA_VT0000183">
         <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_0100003"/>
-        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_VT0010248"/>
-        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_VT0010454"/>
-        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_VT1000784"/>
         <obo:IAO_0000115 rdf:datatype="http://www.w3.org/2001/XMLSchema#string">The pressure of a blood.</obo:IAO_0000115>
         <oboInOwl:hasExactSynonym rdf:datatype="http://www.w3.org/2001/XMLSchema#string">pressure of blood</oboInOwl:hasExactSynonym>
         <rdfs:label rdf:datatype="http://www.w3.org/2001/XMLSchema#string">blood pressure trait</rdfs:label>
@@ -1262,8 +1333,6 @@
 
     <owl:Class rdf:about="http://purl.obolibrary.org/obo/OBA_VT0000832">
         <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_0100003"/>
-        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_VT0010454"/>
-        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_VT1000781"/>
         <obo:IAO_0000115 rdf:datatype="http://www.w3.org/2001/XMLSchema#string">The morphology of a dorsal plus ventral thalamus.</obo:IAO_0000115>
         <oboInOwl:hasExactSynonym rdf:datatype="http://www.w3.org/2001/XMLSchema#string">morphology of dorsal plus ventral thalamus</oboInOwl:hasExactSynonym>
         <rdfs:label rdf:datatype="http://www.w3.org/2001/XMLSchema#string">thalamus morphology trait</rdfs:label>
@@ -1275,8 +1344,6 @@
 
     <owl:Class rdf:about="http://purl.obolibrary.org/obo/OBA_VT0001614">
         <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_0100003"/>
-        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_VT0010454"/>
-        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_VT1000784"/>
         <obo:IAO_0000115 rdf:datatype="http://www.w3.org/2001/XMLSchema#string">The morphology of a blood vessel.</obo:IAO_0000115>
         <oboInOwl:hasExactSynonym rdf:datatype="http://www.w3.org/2001/XMLSchema#string">morphology of blood vessel</oboInOwl:hasExactSynonym>
         <rdfs:label rdf:datatype="http://www.w3.org/2001/XMLSchema#string">blood vessel morphology trait</rdfs:label>
@@ -1299,8 +1366,6 @@
 
     <owl:Class rdf:about="http://purl.obolibrary.org/obo/OBA_VT0002135">
         <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_0100003"/>
-        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_VT0010454"/>
-        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_VT1000777"/>
         <obo:IAO_0000115 rdf:datatype="http://www.w3.org/2001/XMLSchema#string">The morphology of a kidney.</obo:IAO_0000115>
         <oboInOwl:hasExactSynonym rdf:datatype="http://www.w3.org/2001/XMLSchema#string">morphology of kidney</oboInOwl:hasExactSynonym>
         <rdfs:label rdf:datatype="http://www.w3.org/2001/XMLSchema#string">kidney morphology trait</rdfs:label>
@@ -1324,8 +1389,6 @@
 
     <owl:Class rdf:about="http://purl.obolibrary.org/obo/OBA_VT0004391">
         <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_0100003"/>
-        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_VT0005388"/>
-        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_VT0010454"/>
         <obo:IAO_0000115 rdf:datatype="http://www.w3.org/2001/XMLSchema#string">The morphology of a respiratory tube.</obo:IAO_0000115>
         <oboInOwl:hasExactSynonym rdf:datatype="http://www.w3.org/2001/XMLSchema#string">morphology of respiratory tube</oboInOwl:hasExactSynonym>
         <rdfs:label rdf:datatype="http://www.w3.org/2001/XMLSchema#string">respiratory conducting tube morphology trait</rdfs:label>
@@ -1333,16 +1396,6 @@
     
 
 
-    <!-- http://purl.obolibrary.org/obo/OBA_VT0005388 -->
-
-    <owl:Class rdf:about="http://purl.obolibrary.org/obo/OBA_VT0005388">
-        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_VT0015074"/>
-        <obo:IAO_0000115 rdf:datatype="http://www.w3.org/2001/XMLSchema#string">The quality when measured in respiratory system.</obo:IAO_0000115>
-        <rdfs:label rdf:datatype="http://www.w3.org/2001/XMLSchema#string">respiratory system trait</rdfs:label>
-    </owl:Class>
-    
-
-
     <!-- http://purl.obolibrary.org/obo/OBA_VT0005404 -->
 
     <owl:Class rdf:about="http://purl.obolibrary.org/obo/OBA_VT0005404">
@@ -1354,20 +1407,12 @@
     
 
 
-    <!-- http://purl.obolibrary.org/obo/OBA_VT0010248 -->
-
-    <owl:Class rdf:about="http://purl.obolibrary.org/obo/OBA_VT0010248">
-        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_VT0015074"/>
-        <obo:IAO_0000115 rdf:datatype="http://www.w3.org/2001/XMLSchema#string">The quality when measured in hemolymphoid system.</obo:IAO_0000115>
-        <rdfs:label rdf:datatype="http://www.w3.org/2001/XMLSchema#string">hemolymphoid system trait</rdfs:label>
-    </owl:Class>
-    
-
-
     <!-- http://purl.obolibrary.org/obo/OBA_VT0010454 -->
 
     <owl:Class rdf:about="http://purl.obolibrary.org/obo/OBA_VT0010454">
+        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_0100003"/>
         <obo:IAO_0000115 rdf:datatype="http://www.w3.org/2001/XMLSchema#string">The quality when measured in multicellular organism.</obo:IAO_0000115>
+        <oboInOwl:hasExactSynonym rdf:datatype="http://www.w3.org/2001/XMLSchema#string">multicellular organism quality</oboInOwl:hasExactSynonym>
         <rdfs:label rdf:datatype="http://www.w3.org/2001/XMLSchema#string">organism trait</rdfs:label>
     </owl:Class>
     
@@ -1384,15 +1429,6 @@
     
 
 
-    <!-- http://purl.obolibrary.org/obo/OBA_VT0015074 -->
-
-    <owl:Class rdf:about="http://purl.obolibrary.org/obo/OBA_VT0015074">
-        <obo:IAO_0000115 rdf:datatype="http://www.w3.org/2001/XMLSchema#string">The quality when measured in anatomical system.</obo:IAO_0000115>
-        <rdfs:label rdf:datatype="http://www.w3.org/2001/XMLSchema#string">organ system trait</rdfs:label>
-    </owl:Class>
-    
-
-
     <!-- http://purl.obolibrary.org/obo/OBA_VT0015108 -->
 
     <owl:Class rdf:about="http://purl.obolibrary.org/obo/OBA_VT0015108">
@@ -1408,7 +1444,6 @@
 
     <owl:Class rdf:about="http://purl.obolibrary.org/obo/OBA_VT0100003">
         <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_0100003"/>
-        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_VT0010454"/>
         <obo:IAO_0000115 rdf:datatype="http://www.w3.org/2001/XMLSchema#string">The quality of a organism subdivision.</obo:IAO_0000115>
         <oboInOwl:hasExactSynonym rdf:datatype="http://www.w3.org/2001/XMLSchema#string">quality of organism subdivision</oboInOwl:hasExactSynonym>
         <rdfs:label rdf:datatype="http://www.w3.org/2001/XMLSchema#string">organism subdivision trait</rdfs:label>
@@ -1416,6 +1451,18 @@
     
 
 
+    <!-- http://purl.obolibrary.org/obo/OBA_VT0100005 -->
+
+    <owl:Class rdf:about="http://purl.obolibrary.org/obo/OBA_VT0100005">
+        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_0000015"/>
+        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_VT0010454"/>
+        <obo:IAO_0000115 rdf:datatype="http://www.w3.org/2001/XMLSchema#string">The size of a multicellular organism.</obo:IAO_0000115>
+        <oboInOwl:hasExactSynonym rdf:datatype="http://www.w3.org/2001/XMLSchema#string">size of multicellular organism</oboInOwl:hasExactSynonym>
+        <rdfs:label rdf:datatype="http://www.w3.org/2001/XMLSchema#string">body size trait</rdfs:label>
+    </owl:Class>
+    
+
+
     <!-- http://purl.obolibrary.org/obo/OBA_VT0100007 -->
 
     <owl:Class rdf:about="http://purl.obolibrary.org/obo/OBA_VT0100007">
@@ -1427,36 +1474,6 @@
     
 
 
-    <!-- http://purl.obolibrary.org/obo/OBA_VT1000777 -->
-
-    <owl:Class rdf:about="http://purl.obolibrary.org/obo/OBA_VT1000777">
-        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_VT0015074"/>
-        <obo:IAO_0000115 rdf:datatype="http://www.w3.org/2001/XMLSchema#string">The quality when measured in renal system.</obo:IAO_0000115>
-        <rdfs:label rdf:datatype="http://www.w3.org/2001/XMLSchema#string">urinary system trait</rdfs:label>
-    </owl:Class>
-    
-
-
-    <!-- http://purl.obolibrary.org/obo/OBA_VT1000781 -->
-
-    <owl:Class rdf:about="http://purl.obolibrary.org/obo/OBA_VT1000781">
-        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_VT0015074"/>
-        <obo:IAO_0000115 rdf:datatype="http://www.w3.org/2001/XMLSchema#string">The quality when measured in nervous system.</obo:IAO_0000115>
-        <rdfs:label rdf:datatype="http://www.w3.org/2001/XMLSchema#string">nervous/sensory system trait</rdfs:label>
-    </owl:Class>
-    
-
-
-    <!-- http://purl.obolibrary.org/obo/OBA_VT1000784 -->
-
-    <owl:Class rdf:about="http://purl.obolibrary.org/obo/OBA_VT1000784">
-        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/OBA_VT0015074"/>
-        <obo:IAO_0000115 rdf:datatype="http://www.w3.org/2001/XMLSchema#string">The quality when measured in circulatory system.</obo:IAO_0000115>
-        <rdfs:label rdf:datatype="http://www.w3.org/2001/XMLSchema#string">circulatory system trait</rdfs:label>
-    </owl:Class>
-    
-
-
     <!-- http://purl.obolibrary.org/obo/OBA_VT2000000 -->
 
     <owl:Class rdf:about="http://purl.obolibrary.org/obo/OBA_VT2000000">
@@ -1469,5 +1486,5 @@
 
 
 
-<!-- Generated by the OWL API (version 4.2.6) https://github.com/owlcs/owlapi -->
+<!-- Generated by the OWL API (version 4.5.6) https://github.com/owlcs/owlapi -->